Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 8

Waning Gibbous 77%

19:44

11:49

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 08:01, Set: 15:43, Transit: 11:52. Moon - Rise: 19:44, Set: 11:49. Civil Dark: 16:25 - 07:20. Nautical Dark: 17:10 - 06:35. Astro Dark: 17:52 - 05:53

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
94
97
100

Low Clouds (% Sky Obscured)

41
42
44
46
48
49
54
59
70
100
86
84
81
85
83
86
74
75
69
79
100
77
69
68

Medium Clouds (% Sky Obscured)

90
94
92
86
14
15
17
89
100
100
100
100
100
100
100
100
79
100
38
43
15
61
93
96

High Clouds (% Sky Obscured)

72
100
100
98
38
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
74
60
73

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
4
8
3
7
3
6
9
9
9
9
9
9
7
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
13
3
2
1
5
39
51
95
95
95
95
95
95
53
29
11
0
1
20
30
22

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.7
1.3
1.2
0.7
1.3
0.8
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
11
11
11
12
11
9
9
9
13
14
17
19
21
23
23
24
24
23
24
25
24
24
23

Chance of Frost

Temperature (°C)

11
11
11
11
11
11
10
10
10
11
12
12
12
12
12
12
12
12
13
13
14
13
13
13

Feels Like (°C)

8
7
7
7
7
8
7
8
8
7
8
7
7
6
5
5
5
6
6
7
7
7
7
7

Dew Point (°C)

9
9
9
9
10
10
9
9
10
10
10
10
10
10
10
10
9
9
10
10
10
11
11
11

Relative Humidity (%)

87
88
90
91
93
93
95
95
96
95
90
90
89
87
87
87
83
80
83
82
80
83
86
86

Pressure (mb)

1007
1007
1007
1007
1007
1007
1007
1007
1006
1006
1005
1004
1003
1002
1001
1001
1000
1000
999
998
998
998
997
998

Ozone (du)

332
331
328
329
329
325
321
319
316
313
306
296
292
292
294
294
296
295
293
292
290
287
285
285

Tuesday 9

Waning Gibbous 67%

21:11

12:02

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 OK
15 Bad
16 OK

Sun - Rise: 08:02, Set: 15:43, Transit: 11:53. Moon - Rise: 21:11, Set: 12:02. Civil Dark: 16:25 - 07:21. Nautical Dark: 17:09 - 06:36. Astro Dark: 17:51 - 05:54

Total Clouds (% Sky Obscured)

100
100
92
95
100
100
96
100
100
100
100
100
99
100
65
63
63
55
68
63
51
32
46
30

Low Clouds (% Sky Obscured)

67
35
35
36
28
42
36
43
38
41
35
40
44
49
53
48
51
55
60
54
43
31
44
28

Medium Clouds (% Sky Obscured)

46
46
81
57
55
50
38
45
40
0
0
0
2
0
3
2
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

86
46
40
34
43
100
88
87
100
100
100
100
98
100
40
50
50
5
60
60
51
4
0
0

ISS Passover

Visibility (miles)

9
6
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

25
24
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

22
22
20
17
16
14
13
13
13
12
12
12
12
13
13
13
14
15
16
16
17
15
14
13

Chance of Frost

Temperature (°C)

14
14
13
12
11
10
10
9
9
9
9
8
8
8
8
8
9
9
10
11
11
11
10
9

Feels Like (°C)

8
8
8
7
6
6
6
6
5
5
5
4
5
4
4
4
5
5
7
6
6
7
8
7

Dew Point (°C)

11
11
9
8
8
8
8
8
7
7
7
7
7
6
7
7
7
8
8
8
8
7
7
6

Relative Humidity (%)

86
86
76
79
83
84
85
88
87
88
90
91
90
88
90
91
91
88
85
83
80
78
77
81

Pressure (mb)

998
999
1001
1002
1003
1004
1005
1006
1006
1007
1007
1008
1008
1009
1009
1010
1010
1011
1011
1011
1012
1012
1013
1013

Ozone (du)

284
284
283
284
283
282
282
279
277
278
280
281
284
289
290
295
299
302
302
302
307
313
315
319

Wednesday 10

Waning Gibbous 57%

22:33

12:13

17 OK
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 OK
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 08:03, Set: 15:43, Transit: 11:53. Moon - Rise: 22:33, Set: 12:13. Civil Dark: 16:25 - 07:22. Nautical Dark: 17:09 - 06:37. Astro Dark: 17:51 - 05:55

Total Clouds (% Sky Obscured)

30
90
86
81
80
70
69
99
89
67
64
72
41
41
58
54
46
58
65
63
70
74
73
75

Low Clouds (% Sky Obscured)

28
28
20
12
19
6
0
0
11
33
45
36
41
41
58
53
43
32
35
42
53
62
63
63

Medium Clouds (% Sky Obscured)

0
70
67
52
45
40
35
98
82
67
24
24
0
0
0
0
0
0
0
0
0
0
0
60

High Clouds (% Sky Obscured)

0
0
0
40
40
40
41
46
30
6
6
40
0
0
4
3
3
58
65
45
45
40
40
30

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

13
12
11
11
11
12
12
11
11
10
10
9
9
9
9
9
9
10
11
11
10
10
9
9

Chance of Frost

Temperature (°C)

9
8
8
7
7
7
7
7
7
6
6
6
6
5
5
5
5
6
7
8
8
8
8
8

Feels Like (°C)

6
6
5
6
5
5
5
5
3
3
2
4
4
3
3
3
3
4
4
5
6
5
5
5

Dew Point (°C)

6
6
6
6
6
6
5
6
6
5
5
5
5
4
4
3
3
4
4
5
6
7
7
7

Relative Humidity (%)

84
85
87
90
91
91
91
93
93
93
94
94
94
93
91
89
88
83
82
84
84
88
93
94

Pressure (mb)

1015
1016
1017
1017
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1017
1017
1016
1016
1015
1015

Ozone (du)

318
318
317
319
321
320
315
312
308
307
306
305
305
305
304
304
303
301
302
302
302
305
306
307

Thursday 11

Third Quarter 46%

23:51

12:22

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 08:04, Set: 15:43, Transit: 11:54. Moon - Rise: 23:51, Set: 12:22. Civil Dark: 16:25 - 07:22. Nautical Dark: 17:09 - 06:38. Astro Dark: 17:52 - 05:56

Total Clouds (% Sky Obscured)

77
75
74
78
87
94
100
100
100
100
100
95
100
98
97
96
97
99
100
100
100
100
69
99

Low Clouds (% Sky Obscured)

64
58
70
70
63
72
76
83
91
99
94
75
75
75
66
61
65
69
73
75
77
78
49
26

Medium Clouds (% Sky Obscured)

60
61
61
67
24
36
48
37
37
31
32
38
39
78
64
90
93
94
97
97
95
82
60
67

High Clouds (% Sky Obscured)

25
20
14
10
40
68
94
100
100
100
77
50
44
36
39
48
65
81
100
98
95
53
38
20

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
1
1
2
4
9
14
18
28
41
45
32
18
9
11
19
22
31
46
51
56
47

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

9
9
10
10
10
10
11
12
12
10
9
9
10
10
11
12
11
12
13
14
13
13
13
11

Chance of Frost

Temperature (°C)

8
8
8
8
8
7
8
8
9
9
9
8
8
8
9
9
9
10
10
10
10
11
11
10

Feels Like (°C)

5
4
4
5
5
4
4
4
5
6
6
5
5
5
5
5
6
6
7
7
7
7
7
8

Dew Point (°C)

7
7
7
7
7
7
7
7
7
7
7
7
7
8
8
7
8
9
9
9
9
8
8
8

Relative Humidity (%)

94
93
94
94
94
96
96
90
87
87
88
91
95
98
91
88
90
91
91
91
88
81
83
87

Pressure (mb)

1015
1015
1015
1014
1014
1014
1013
1013
1012
1012
1012
1011
1011
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010

Ozone (du)

307
308
310
311
307
305
306
307
309
308
307
305
307
308
308
308
308
310
314
316
321
325
325
327

Friday 12

Waning Crescent 36%

01:05

12:30

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 08:05, Set: 15:43, Transit: 11:54. Moon - Rise: 01:05, Set: 12:30. Civil Dark: 16:25 - 07:23. Nautical Dark: 17:10 - 06:39. Astro Dark: 17:52 - 05:56

Total Clouds (% Sky Obscured)

100
87
72
58
59
56
57
69
83
100
90
79
66
73
73
74
65
61
57
68
78
87
87
85

Low Clouds (% Sky Obscured)

0
14
27
44
46
39
36
50
64
82
75
63
52
61
64
68
58
49
40
42
45
41
55
68

Medium Clouds (% Sky Obscured)

100
85
72
58
59
56
57
69
83
100
82
60
40
65
70
70
65
61
57
68
60
57
60
60

High Clouds (% Sky Obscured)

2
6
42
45
40
45
45
60
77
100
77
50
20
60
60
60
60
60
57
40
18
0
4
9

ISS Passover

Visibility (miles)

9
9
9
9
9
7
5
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain

Precipitation Probability (%)

34
16
4
11
27
42
45
26
24
27
35
31
19
0
0
0
0
0
0
0
1
3
31
51

Precipitation Amount (mm)

0
0
0
0
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2

Wind Speed/Direction (mph)

10
9
8
7
6
7
7
8
9
10
10
9
9
9
10
10
11
11
12
12
12
13
14
14

Chance of Frost

Temperature (°C)

9
9
8
7
6
7
6
6
6
6
7
7
7
7
6
6
6
7
8
8
8
8
8
8

Feels Like (°C)

6
5
5
5
4
5
5
4
4
4
4
4
4
4
3
3
3
4
4
4
5
5
5
6

Dew Point (°C)

7
7
7
7
6
6
6
6
6
5
5
4
3
3
3
4
4
4
5
5
5
5
5
6

Relative Humidity (%)

87
90
93
94
96
98
98
96
96
93
90
82
78
76
81
83
87
84
82
79
79
79
81
84

Pressure (mb)

1011
1011
1011
1012
1012
1012
1012
1012
1011
1011
1011
1011
1011
1011
1015
1015
1016
1016
1016
1016
1016
1016
1016
1015

Ozone (du)

326
328
329
331
330
330
329
331
331
331
336
340
344
351
359
366
373
384
396
407
407
407
406
396

Saturday 13

Waning Crescent 27%

02:18

12:40

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 08:06, Set: 15:43, Transit: 11:55. Moon - Rise: 02:18, Set: 12:40. Civil Dark: 16:25 - 07:24. Nautical Dark: 17:10 - 06:39. Astro Dark: 17:52 - 05:57

Total Clouds (% Sky Obscured)

88
80
72
62
72
84
99
99
100
100
100
99
98
99
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

83
76
67
60
62
69
75
78
82
90
93
93
93
94
91
90
92
95
99
93
85
76
84
92

Medium Clouds (% Sky Obscured)

52
47
47
48
62
79
94
89
85
80
74
73
67
64
62
59
61
67
79
85
88
90
86
84

High Clouds (% Sky Obscured)

13
37
58
62
63
54
45
63
82
100
93
84
76
82
87
95
96
98
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
7
6
4
6
7
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

Very Light Rain
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
Very Light Rain
None
None
Very Light Rain
None
None
Very Light Rain

Precipitation Probability (%)

60
47
28
15
56
80
93
93
87
70
52
40
19
31
42
41
48
56
50
47
53
44
47
51

Precipitation Amount (mm)

0.3
0
0
0
0.2
0.5
0.6
0.6
0.6
0.3
0
0
0
0
0
0
0
0.2
0
0
0.2
0
0
0.2

Wind Speed/Direction (mph)

15
16
16
15
15
17
19
21
20
20
19
19
19
19
20
21
22
22
22
23
22
21
20
20

Chance of Frost

Temperature (°C)

8
8
9
9
9
10
10
10
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11

Feels Like (°C)

6
7
4
5
5
5
4
4
6
5
4
4
5
5
6
6
5
5
5
6
5
5
5
4

Dew Point (°C)

6
7
7
7
7
8
8
9
9
9
9
9
9
8
9
9
9
9
9
9
9
9
10
9

Relative Humidity (%)

85
90
88
88
88
88
88
88
88
87
87
86
86
84
86
86
86
86
86
86
87
88
90
90

Pressure (mb)

1015
1015
1014
1014
1014
1013
1013
1012
1012
1012
1011
1011
1011
1011
1011
1010
1010
1010
1010
1009
1009
1009
1009
1008

Ozone (du)

386
376
369
362
356
351
346
342
336
331
326
323
320
317
316
315
314
314
314
314
313
312
312
309

Sunday 14

Waning Crescent 19%

03:32

12:51

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 08:07, Set: 15:43, Transit: 11:55. Moon - Rise: 03:32, Set: 12:51. Civil Dark: 16:25 - 07:25. Nautical Dark: 17:10 - 06:40. Astro Dark: 17:52 - 05:58

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
90
79
64
70
73
77
84
90
94

Low Clouds (% Sky Obscured)

100
100
100
100
98
97
95
88
81
74
70
71
64
62
38
7
5
5
5

Medium Clouds (% Sky Obscured)

82
82
83
88
86
81
76
84
92
100
80
63
45
60
73
77
76
67
57

High Clouds (% Sky Obscured)

100
99
96
94
95
98
100
79
59
35
30
17
4
7
6
9
40
70
94

ISS Passover

Visibility (miles)

9
9
9
9
9
9
8
7
8
8
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
Very Light Rain
None
None
Very Light Rain
Very Light Rain
Very Light Rain
None
None
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None

Precipitation Probability (%)

43
53
65
64
59
61
58
58
54
38
73
95
95
77
50
7
6
3
4

Precipitation Amount (mm)

0
0
0.3
0
0
0.3
0.2
0.2
0
0
0.4
0.7
0.9
0.4
0
0
0
0
0

Wind Speed/Direction (mph)

20
20
20
20
21
21
22
22
22
22
22
17
13
11
13
14
15
17
18

Chance of Frost

Temperature (°C)

11
11
11
11
11
11
11
11
11
11
11
11
11
10
10
10
9
9
9

Feels Like (°C)

4
4
5
5
4
4
4
4
4
4
5
5
5
5
5
6
7
7
7

Dew Point (°C)

9
9
9
9
9
9
9
9
9
9
9
9
8
8
7
7
6
6
5

Relative Humidity (%)

90
90
88
88
88
88
88
88
88
87
87
87
85
85
84
82
81
80
76

Pressure (mb)

1008
1008
1007
1007
1007
1006
1005
1005
1004
1004
1004
1004
1004
1005
1005
1006
1007
1006
1006

Ozone (du)

305
302
299
296
293
292
291
291
290
289
289
291
294
296
301
305
310
317
324

Forecast for Boston, Lincolnshire, United Kingdom (52.98,-0.02)

Generated: 08/12/25 17:45:55. Forecast: 08/12/25 to 14/12/25. Timezone: UTC+0.00